Saturday, November 18, 2017

Resolution : ORA-01157: cannot identify/lock data file 6 - see DBWR trace file

When we are working with oracle database some times the database may not open with the below errors:

ORA-01157: cannot identify/lock data file 6 - see DBWR trace file


To resolve this error issue the below sql commands and try to open the database

1. select name from v$datafile where file#=6;
2. alter database datafile 6 OFFLINE DROP;
3.alter database open;

When we try to open the database again we may get data file error

Repeat this step until all the error data files got dropped
Ones this got resolved we can open the database


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